如何在laravel上没有get（）的情况下启动模型

I have this on my model Scholar

<?php namespace App;

use Illuminate\Database\Eloquent\Model;

class Scholar extends Model {

    protected $primaryKey = 'scholar_id';
    protected $fillable = ['ngo_id','scholar_lname','scholar_fname','scholar_image','scholar_nickname','scholar_cityAddress','scholar_permaAddress','scholar_birthday','scholar_placebirth','scholar_age','scholar_gender','scholar_email','scholar_contact'];

}

then this is on my Controller

$scholars = new Scholar; <------

if(Input::get('age_from'))
    $scholars->where('age', '=', Input::get('age_from'));

$scholars->get();

return $scholars;

I want to initiate this, but when I try the $scholars = Scholar::all(); I cant use ->get() anymore;

Anyway how to do this optional where?

You can use newQuery;

$scholars = (new Scholar)->newQuery();

if(Input::get('age_from')) {
    $scholars->where('age', '=', Input::get('age_from'));
}

return $scholars->get();

Probably this is not the best way to do it but it works

Try something like:

$scholars = Scholar::where('id','>',0); //Assuming you have an autoincrement id in your table

if(Input::get('age_from'))
    $scholars->where('age', '=', Input::get('age_from'));

$scholars->get();

return $scholars;

If you need to get all scholars anyway you can get all rows in a collection with just one query:

$allScholars = Scholar::all();

And then you can get any data from the collection:

$scholars = $allScholars->where('age', '=', Input::get('age_from'));

Now you all scholars in $allScholars collections and scholars of specified age in $scholars one.